v3.26.1
Document And Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Aug. 13, 2026
Document Information Line Items    
Entity Central Index Key 0002101393  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Transition Report false  
Entity File Number 001-43322  
Entity Registrant Name AmperCap Acquisition Company  
Entity Incorporation, State or Country Code E9  
Entity Tax Identification Number 61-2317653  
Entity Address, Address Line One 12 East 49th Street  
Entity Address, Address Line Two 18th Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10017  
City Area Code 917  
Local Phone Number 907-1171  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company true  
Entity Common Stock, Shares Outstanding   19,958,575
Amendment Flag false  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31  
Units, each consisting of one Ordinary Share and one Right    
Document Information Line Items    
Title of 12(b) Security Units, each consisting of one Ordinary Share and one Right  
Trading Symbol APMCU  
Security Exchange Name NASDAQ  
Ordinary Shares, par value $0.0001 per share    
Document Information Line Items    
Title of 12(b) Security Ordinary Shares, par value $0.0001 per share  
Trading Symbol APMC  
Security Exchange Name NASDAQ  
Rights, each Right entitling the holder to receive one-tenth (1/10) of one Ordinary Share upon the consummation of an initial business combination    
Document Information Line Items    
Title of 12(b) Security Rights, each Right entitling the holder to receive one-tenth (1/10) of one Ordinary Share upon the consummation of an initial business combination  
Trading Symbol APMCR  
Security Exchange Name NASDAQ